Решить уравнение:
а) -4х =32;
б) -1,2 : х=-3,6;
в) 17/21z + 9/14=5/21;
г) 2/3(1/3х - 1/2) - 4x=2 целых
а) -4х =32;
б) -1,2 : х=-3,6;
в) 17/21z + 9/14=5/21;
г) 2/3(1/3х - 1/2) - 4x=2 целых
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Answers & Comments
x=32:(-4)
x=-8
б)-1.2:x=-3.6
x=-3.6:(-1.2)
x=3
в)17/21z+9/14=5/21
17/21z=5/21-9/14
17/21z=-17/42
z=-17/42:17/21
z=1/2
z=0.5
г)2/3(1/3-1/2)-4x=2
2/9x-2/6-4x=2
2/9x-4x=2+2/6
-34/9x=7/3
x=7/3:(-34/9)
x=21/34